Originally Posted by S3X_Jay

Apple users are generally pretty good about doing upgrades (far better than Android users). So if you see an old OS it's probably an old device. The iPhone 4s, iPad Mini (gen 1), iPad (gen 2 & 3), and iPod Touch (gen 5) all maxed out at iOS 9. So it's probably one of those devices. But those devices were all released in 2011 and 2012. They're getting really old at this point. If someone can't afford a new device after 9 or 10 years, can they afford to join your site (or the sites you're promoting)? If they can't afford to join your site, do you really care?